cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame^] | 1 | /* |
| 2 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 3 | % % |
| 4 | % % |
| 5 | % M M AAA GGGG IIIII CCCC % |
| 6 | % MM MM A A G I C % |
| 7 | % M M M AAAAA G GGG I C % |
| 8 | % M M A A G G I C % |
| 9 | % M M A A GGGG IIIII CCCC % |
| 10 | % % |
| 11 | % % |
| 12 | % MagickCore Image Magic Methods % |
| 13 | % % |
| 14 | % Software Design % |
| 15 | % Bob Friesenhahn % |
| 16 | % July 2000 % |
| 17 | % % |
| 18 | % % |
| 19 | % Copyright 1999-2009 ImageMagick Studio LLC, a non-profit organization % |
| 20 | % dedicated to making software imaging solutions freely available. % |
| 21 | % % |
| 22 | % You may not use this file except in compliance with the License. You may % |
| 23 | % obtain a copy of the License at % |
| 24 | % % |
| 25 | % http://www.imagemagick.org/script/license.php % |
| 26 | % % |
| 27 | % Unless required by applicable law or agreed to in writing, software % |
| 28 | % distributed under the License is distributed on an "AS IS" BASIS, % |
| 29 | % WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. % |
| 30 | % See the License for the specific language governing permissions and % |
| 31 | % limitations under the License. % |
| 32 | % % |
| 33 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 34 | % |
| 35 | % |
| 36 | */ |
| 37 | |
| 38 | /* |
| 39 | Include declarations. |
| 40 | */ |
| 41 | #include "magick/studio.h" |
| 42 | #include "magick/blob.h" |
| 43 | #include "magick/client.h" |
| 44 | #include "magick/configure.h" |
| 45 | #include "magick/exception.h" |
| 46 | #include "magick/exception-private.h" |
| 47 | #include "magick/hashmap.h" |
| 48 | #include "magick/magic.h" |
| 49 | #include "magick/memory_.h" |
| 50 | #include "magick/semaphore.h" |
| 51 | #include "magick/string_.h" |
| 52 | #include "magick/token.h" |
| 53 | #include "magick/utility.h" |
| 54 | #include "magick/xml-tree.h" |
| 55 | |
| 56 | /* |
| 57 | Define declarations. |
| 58 | */ |
| 59 | #define MagicFilename "magic.xml" |
| 60 | |
| 61 | /* |
| 62 | Static declarations. |
| 63 | */ |
| 64 | static const char |
| 65 | *MagicMap = (const char *) |
| 66 | "<?xml version=\"1.0\"?>" |
| 67 | "<magicmap>" |
| 68 | " <magic name=\"AVI\" offset=\"0\" target=\"RIFF\" />" |
| 69 | " <magic name=\"8BIMWTEXT\" offset=\"0\" target=\"8\\000B\\000I\\000M\\000#\" />" |
| 70 | " <magic name=\"8BIMTEXT\" offset=\"0\" target=\"8BIM#\" />" |
| 71 | " <magic name=\"8BIM\" offset=\"0\" target=\"8BIM\" />" |
| 72 | " <magic name=\"BMP\" offset=\"0\" target=\"BA\" />" |
| 73 | " <magic name=\"BMP\" offset=\"0\" target=\"BM\" />" |
| 74 | " <magic name=\"BMP\" offset=\"0\" target=\"CI\" />" |
| 75 | " <magic name=\"BMP\" offset=\"0\" target=\"CP\" />" |
| 76 | " <magic name=\"BMP\" offset=\"0\" target=\"IC\" />" |
| 77 | " <magic name=\"BMP\" offset=\"0\" target=\"PI\" />" |
| 78 | " <magic name=\"CIN\" offset=\"0\" target=\"\\200\\052\\137\\327\" />" |
| 79 | " <magic name=\"CGM\" offset=\"0\" target=\"BEGMF\" />" |
| 80 | " <magic name=\"DCM\" offset=\"128\" target=\"DICM\" />" |
| 81 | " <magic name=\"DCX\" offset=\"0\" target=\"\\261\\150\\336\\72\" />" |
| 82 | " <magic name=\"DDS\" offset=\"0\" target=\"DDS \" />" |
| 83 | " <magic name=\"DIB\" offset=\"0\" target=\"\\050\\000\" />" |
| 84 | " <magic name=\"DJVU\" offset=\"0\" target=\"AT&TFORM\" />" |
| 85 | " <magic name=\"DOT\" offset=\"0\" target=\"digraph\" />" |
| 86 | " <magic name=\"DPX\" offset=\"0\" target=\"SDPX\" />" |
| 87 | " <magic name=\"DPX\" offset=\"0\" target=\"XPDS\" />" |
| 88 | " <magic name=\"EMF\" offset=\"40\" target=\"\\040\\105\\115\\106\\000\\000\\001\\000\" />" |
| 89 | " <magic name=\"EPT\" offset=\"0\" target=\"\\305\\320\\323\\306\" />" |
| 90 | " <magic name=\"EXR\" offset=\"0\" target=\"\\166\\057\\061\\001\" />" |
| 91 | " <magic name=\"FAX\" offset=\"0\" target=\"DFAX\" />" |
| 92 | " <magic name=\"FIG\" offset=\"0\" target=\"#FIG\" />" |
| 93 | " <magic name=\"FITS\" offset=\"0\" target=\"IT0\" />" |
| 94 | " <magic name=\"FITS\" offset=\"0\" target=\"SIMPLE\" />" |
| 95 | " <magic name=\"FPX\" offset=\"0\" target=\"\\320\\317\\021\\340\" />" |
| 96 | " <magic name=\"GIF\" offset=\"0\" target=\"GIF8\" />" |
| 97 | " <magic name=\"GPLT\" offset=\"0\" target=\"#!/usr/local/bin/gnuplot\" />" |
| 98 | " <magic name=\"HDF\" offset=\"1\" target=\"HDF\" />" |
| 99 | " <magic name=\"HPGL\" offset=\"0\" target=\"IN;\" />" |
| 100 | " <magic name=\"HTML\" offset=\"1\" target=\"HTML\" />" |
| 101 | " <magic name=\"HTML\" offset=\"1\" target=\"html\" />" |
| 102 | " <magic name=\"ILBM\" offset=\"8\" target=\"ILBM\" />" |
| 103 | " <magic name=\"IPTCWTEXT\" offset=\"0\" target=\"\\062\\000#\\000\\060\\000=\\000\\042\\000&\\000#\\000\\060\\000;\\000&\\000#\\000\\062\\000;\\000\\042\\000\" />" |
| 104 | " <magic name=\"IPTCTEXT\" offset=\"0\" target=\"2#0=\\042�\\042\" />" |
| 105 | " <magic name=\"IPTC\" offset=\"0\" target=\"\\034\\002\" />" |
| 106 | " <magic name=\"JNG\" offset=\"0\" target=\"\\213JNG\\r\\n\\032\\n\" />" |
| 107 | " <magic name=\"JPEG\" offset=\"0\" target=\"\\377\\330\\377\" />" |
| 108 | " <magic name=\"JPC\" offset=\"0\" target=\"\\377\\117\" />" |
| 109 | " <magic name=\"JP2\" offset=\"4\" target=\"\\152\\120\\040\\040\\015\" />" |
| 110 | " <magic name=\"MIFF\" offset=\"0\" target=\"Id=ImageMagick\" />" |
| 111 | " <magic name=\"MIFF\" offset=\"0\" target=\"id=ImageMagick\" />" |
| 112 | " <magic name=\"MNG\" offset=\"0\" target=\"\\212MNG\\r\\n\\032\\n\" />" |
| 113 | " <magic name=\"MPC\" offset=\"0\" target=\"id=MagickCache\" />" |
| 114 | " <magic name=\"MPEG\" offset=\"0\" target=\"\\000\\000\\001\\263\" />" |
| 115 | " <magic name=\"MVG\" offset=\"0\" target=\"push graphic-context\" />" |
| 116 | " <magic name=\"PCD\" offset=\"2048\" target=\"PCD_\" />" |
| 117 | " <magic name=\"PCL\" offset=\"0\" target=\"\\033E\\033\" />" |
| 118 | " <magic name=\"PCX\" offset=\"0\" target=\"\\012\\002\" />" |
| 119 | " <magic name=\"PCX\" offset=\"0\" target=\"\\012\\005\" />" |
| 120 | " <magic name=\"PDB\" offset=\"60\" target=\"vIMGView\" />" |
| 121 | " <magic name=\"PDF\" offset=\"0\" target=\"%PDF-\" />" |
| 122 | " <magic name=\"PFA\" offset=\"0\" target=\"%!PS-AdobeFont-1.0\" />" |
| 123 | " <magic name=\"PFB\" offset=\"6\" target=\"%!PS-AdobeFont-1.0\" />" |
| 124 | " <magic name=\"PGX\" offset=\"0\" target=\"\\050\\107\\020\\115\\046\" />" |
| 125 | " <magic name=\"PICT\" offset=\"522\" target=\"\\000\\021\\002\\377\\014\\000\" />" |
| 126 | " <magic name=\"PNG\" offset=\"0\" target=\"\\211PNG\\r\\n\\032\\n\" />" |
| 127 | " <magic name=\"PNM\" offset=\"0\" target=\"P1\" />" |
| 128 | " <magic name=\"PNM\" offset=\"0\" target=\"P2\" />" |
| 129 | " <magic name=\"PNM\" offset=\"0\" target=\"P3\" />" |
| 130 | " <magic name=\"PNM\" offset=\"0\" target=\"P4\" />" |
| 131 | " <magic name=\"PNM\" offset=\"0\" target=\"P5\" />" |
| 132 | " <magic name=\"PNM\" offset=\"0\" target=\"P6\" />" |
| 133 | " <magic name=\"PNM\" offset=\"0\" target=\"P7\" />" |
| 134 | " <magic name=\"PNM\" offset=\"0\" target=\"PF\" />" |
| 135 | " <magic name=\"PNM\" offset=\"0\" target=\"Pf\" />" |
| 136 | " <magic name=\"PS\" offset=\"0\" target=\"%!\" />" |
| 137 | " <magic name=\"PS\" offset=\"0\" target=\"\\004%!\" />" |
| 138 | " <magic name=\"PS\" offset=\"0\" target=\"\\305\\320\\323\\306\" />" |
| 139 | " <magic name=\"PSD\" offset=\"0\" target=\"8BPS\" />" |
| 140 | " <magic name=\"PWP\" offset=\"0\" target=\"SFW95\" />" |
| 141 | " <magic name=\"RAD\" offset=\"0\" target=\"#?RADIANCE\" />" |
| 142 | " <magic name=\"RAD\" offset=\"0\" target=\"VIEW= \" />" |
| 143 | " <magic name=\"RLE\" offset=\"0\" target=\"\\122\\314\" />" |
| 144 | " <magic name=\"SCT\" offset=\"0\" target=\"CT\" />" |
| 145 | " <magic name=\"SFW\" offset=\"0\" target=\"SFW94\" />" |
| 146 | " <magic name=\"SGI\" offset=\"0\" target=\"\\001\\332\" />" |
| 147 | " <magic name=\"SUN\" offset=\"0\" target=\"\\131\\246\\152\\225\" />" |
| 148 | " <magic name=\"SVG\" offset=\"1\" target=\"?XML\" />" |
| 149 | " <magic name=\"SVG\" offset=\"1\" target=\"?xml\" />" |
| 150 | " <magic name=\"TXT\" offset=\"0\" target=\"# ImageMagick pixel enumeration:\" />" |
| 151 | " <magic name=\"TIFF\" offset=\"0\" target=\"\\115\\115\\000\\052\" />" |
| 152 | " <magic name=\"TIFF\" offset=\"0\" target=\"\\111\\111\\052\\000\" />" |
| 153 | " <magic name=\"TIFF64\" offset=\"0\" target=\"\\115\\115\\000\\053\\000\\010\\000\\000\" />" |
| 154 | " <magic name=\"TIFF64\" offset=\"0\" target=\"\\115\\115\\000\\053\\000\\010\\000\\000\" />" |
| 155 | " <magic name=\"VICAR\" offset=\"0\" target=\"LBLSIZE\" />" |
| 156 | " <magic name=\"VICAR\" offset=\"0\" target=\"NJPL1I\" />" |
| 157 | " <magic name=\"VIFF\" offset=\"0\" target=\"\\253\\001\" />" |
| 158 | " <magic name=\"WMF\" offset=\"0\" target=\"\\327\\315\\306\\232\" />" |
| 159 | " <magic name=\"WMF\" offset=\"0\" target=\"\\001\\000\\011\\000\" />" |
| 160 | " <magic name=\"WPG\" offset=\"0\" target=\"\\377WPC\" />" |
| 161 | " <magic name=\"XBM\" offset=\"0\" target=\"#define\" />" |
| 162 | " <magic name=\"XCF\" offset=\"0\" target=\"gimp xcf\" />" |
| 163 | " <magic name=\"XPM\" offset=\"1\" target=\"* XPM *\" />" |
| 164 | " <magic name=\"XWD\" offset=\"4\" target=\"\\007\\000\\000\" />" |
| 165 | " <magic name=\"XWD\" offset=\"5\" target=\"\\000\\000\\007\" />" |
| 166 | "</magicmap>"; |
| 167 | |
| 168 | static LinkedListInfo |
| 169 | *magic_list = (LinkedListInfo *) NULL; |
| 170 | |
| 171 | static SemaphoreInfo |
| 172 | *magic_semaphore = (SemaphoreInfo *) NULL; |
| 173 | |
| 174 | static volatile MagickBooleanType |
| 175 | instantiate_magic = MagickFalse; |
| 176 | |
| 177 | /* |
| 178 | Forward declarations. |
| 179 | */ |
| 180 | static MagickBooleanType |
| 181 | InitializeMagicList(ExceptionInfo *), |
| 182 | LoadMagicLists(const char *,ExceptionInfo *); |
| 183 | |
| 184 | /* |
| 185 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 186 | % % |
| 187 | % % |
| 188 | % % |
| 189 | + D e s t r o y M a g i c L i s t % |
| 190 | % % |
| 191 | % % |
| 192 | % % |
| 193 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 194 | % |
| 195 | % DestroyMagicList() deallocates memory associated with the magic list. |
| 196 | % |
| 197 | % The format of the DestroyMagicList method is: |
| 198 | % |
| 199 | % DestroyMagicList(void) |
| 200 | % |
| 201 | */ |
| 202 | |
| 203 | static void *DestroyMagicElement(void *magic_info) |
| 204 | { |
| 205 | register MagicInfo |
| 206 | *p; |
| 207 | |
| 208 | p=(MagicInfo *) magic_info; |
| 209 | if (p->path != (char *) NULL) |
| 210 | p->path=DestroyString(p->path); |
| 211 | if (p->name != (char *) NULL) |
| 212 | p->name=DestroyString(p->name); |
| 213 | if (p->target != (char *) NULL) |
| 214 | p->target=DestroyString(p->target); |
| 215 | if (p->magic != (unsigned char *) NULL) |
| 216 | p->magic=(unsigned char *) RelinquishMagickMemory(p->magic); |
| 217 | p=(MagicInfo *) RelinquishMagickMemory(p); |
| 218 | return((void *) NULL); |
| 219 | } |
| 220 | |
| 221 | MagickExport void DestroyMagicList(void) |
| 222 | { |
| 223 | AcquireSemaphoreInfo(&magic_semaphore); |
| 224 | if (magic_list != (LinkedListInfo *) NULL) |
| 225 | magic_list=DestroyLinkedList(magic_list,DestroyMagicElement); |
| 226 | instantiate_magic=MagickFalse; |
| 227 | RelinquishSemaphoreInfo(magic_semaphore); |
| 228 | DestroySemaphoreInfo(&magic_semaphore); |
| 229 | } |
| 230 | |
| 231 | /* |
| 232 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 233 | % % |
| 234 | % % |
| 235 | % % |
| 236 | + G e t M a g i c I n f o % |
| 237 | % % |
| 238 | % % |
| 239 | % % |
| 240 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 241 | % |
| 242 | % GetMagicInfo() searches the magic list for the specified name and if found |
| 243 | % returns attributes for that magic. |
| 244 | % |
| 245 | % The format of the GetMagicInfo method is: |
| 246 | % |
| 247 | % const MagicInfo *GetMagicInfo(const unsigned char *magic, |
| 248 | % const size_t length,ExceptionInfo *exception) |
| 249 | % |
| 250 | % A description of each parameter follows: |
| 251 | % |
| 252 | % o magic: A binary string generally representing the first few characters |
| 253 | % of the image file or blob. |
| 254 | % |
| 255 | % o length: the length of the binary signature. |
| 256 | % |
| 257 | % o exception: return any errors or warnings in this structure. |
| 258 | % |
| 259 | */ |
| 260 | MagickExport const MagicInfo *GetMagicInfo(const unsigned char *magic, |
| 261 | const size_t length,ExceptionInfo *exception) |
| 262 | { |
| 263 | register const MagicInfo |
| 264 | *p; |
| 265 | |
| 266 | assert(exception != (ExceptionInfo *) NULL); |
| 267 | if ((magic_list == (LinkedListInfo *) NULL) || |
| 268 | (instantiate_magic == MagickFalse)) |
| 269 | if (InitializeMagicList(exception) == MagickFalse) |
| 270 | return((const MagicInfo *) NULL); |
| 271 | if ((magic_list == (LinkedListInfo *) NULL) || |
| 272 | (IsLinkedListEmpty(magic_list) != MagickFalse)) |
| 273 | return((const MagicInfo *) NULL); |
| 274 | if (magic == (const unsigned char *) NULL) |
| 275 | return((const MagicInfo *) GetValueFromLinkedList(magic_list,0)); |
| 276 | if (length == 0) |
| 277 | return((const MagicInfo *) NULL); |
| 278 | /* |
| 279 | Search for magic tag. |
| 280 | */ |
| 281 | AcquireSemaphoreInfo(&magic_semaphore); |
| 282 | ResetLinkedListIterator(magic_list); |
| 283 | p=(const MagicInfo *) GetNextValueInLinkedList(magic_list); |
| 284 | while (p != (const MagicInfo *) NULL) |
| 285 | { |
| 286 | assert(p->offset >= 0); |
| 287 | if (((size_t) (p->offset+p->length) <= length) && |
| 288 | (memcmp(magic+p->offset,p->magic,p->length) == 0)) |
| 289 | break; |
| 290 | p=(const MagicInfo *) GetNextValueInLinkedList(magic_list); |
| 291 | } |
| 292 | if (p != (const MagicInfo *) NULL) |
| 293 | (void) InsertValueInLinkedList(magic_list,0, |
| 294 | RemoveElementByValueFromLinkedList(magic_list,p)); |
| 295 | RelinquishSemaphoreInfo(magic_semaphore); |
| 296 | return(p); |
| 297 | } |
| 298 | |
| 299 | /* |
| 300 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 301 | % % |
| 302 | % % |
| 303 | % % |
| 304 | % G e t M a g i c I n f o L i s t % |
| 305 | % % |
| 306 | % % |
| 307 | % % |
| 308 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 309 | % |
| 310 | % GetMagicInfoList() returns any image aliases that match the specified |
| 311 | % pattern. |
| 312 | % |
| 313 | % The magic of the GetMagicInfoList function is: |
| 314 | % |
| 315 | % const MagicInfo **GetMagicInfoList(const char *pattern, |
| 316 | % unsigned long *number_aliases,ExceptionInfo *exception) |
| 317 | % |
| 318 | % A description of each parameter follows: |
| 319 | % |
| 320 | % o pattern: Specifies a pointer to a text string containing a pattern. |
| 321 | % |
| 322 | % o number_aliases: This integer returns the number of aliases in the |
| 323 | % list. |
| 324 | % |
| 325 | % o exception: return any errors or warnings in this structure. |
| 326 | % |
| 327 | */ |
| 328 | |
| 329 | #if defined(__cplusplus) || defined(c_plusplus) |
| 330 | extern "C" { |
| 331 | #endif |
| 332 | |
| 333 | static int MagicInfoCompare(const void *x,const void *y) |
| 334 | { |
| 335 | const MagicInfo |
| 336 | **p, |
| 337 | **q; |
| 338 | |
| 339 | p=(const MagicInfo **) x, |
| 340 | q=(const MagicInfo **) y; |
| 341 | if (LocaleCompare((*p)->path,(*q)->path) == 0) |
| 342 | return(LocaleCompare((*p)->name,(*q)->name)); |
| 343 | return(LocaleCompare((*p)->path,(*q)->path)); |
| 344 | } |
| 345 | |
| 346 | #if defined(__cplusplus) || defined(c_plusplus) |
| 347 | } |
| 348 | #endif |
| 349 | |
| 350 | MagickExport const MagicInfo **GetMagicInfoList(const char *pattern, |
| 351 | unsigned long *number_aliases,ExceptionInfo *exception) |
| 352 | { |
| 353 | const MagicInfo |
| 354 | **aliases; |
| 355 | |
| 356 | register const MagicInfo |
| 357 | *p; |
| 358 | |
| 359 | register long |
| 360 | i; |
| 361 | |
| 362 | /* |
| 363 | Allocate magic list. |
| 364 | */ |
| 365 | assert(pattern != (char *) NULL); |
| 366 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",pattern); |
| 367 | assert(number_aliases != (unsigned long *) NULL); |
| 368 | *number_aliases=0; |
| 369 | p=GetMagicInfo((const unsigned char *) "*",0,exception); |
| 370 | if (p == (const MagicInfo *) NULL) |
| 371 | return((const MagicInfo **) NULL); |
| 372 | aliases=(const MagicInfo **) AcquireQuantumMemory((size_t) |
| 373 | GetNumberOfElementsInLinkedList(magic_list)+1UL,sizeof(*aliases)); |
| 374 | if (aliases == (const MagicInfo **) NULL) |
| 375 | return((const MagicInfo **) NULL); |
| 376 | /* |
| 377 | Generate magic list. |
| 378 | */ |
| 379 | AcquireSemaphoreInfo(&magic_semaphore); |
| 380 | ResetLinkedListIterator(magic_list); |
| 381 | p=(const MagicInfo *) GetNextValueInLinkedList(magic_list); |
| 382 | for (i=0; p != (const MagicInfo *) NULL; ) |
| 383 | { |
| 384 | if ((p->stealth == MagickFalse) && |
| 385 | (GlobExpression(p->name,pattern,MagickFalse) != MagickFalse)) |
| 386 | aliases[i++]=p; |
| 387 | p=(const MagicInfo *) GetNextValueInLinkedList(magic_list); |
| 388 | } |
| 389 | RelinquishSemaphoreInfo(magic_semaphore); |
| 390 | qsort((void *) aliases,(size_t) i,sizeof(*aliases),MagicInfoCompare); |
| 391 | aliases[i]=(MagicInfo *) NULL; |
| 392 | *number_aliases=(unsigned long) i; |
| 393 | return(aliases); |
| 394 | } |
| 395 | |
| 396 | /* |
| 397 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 398 | % % |
| 399 | % % |
| 400 | % % |
| 401 | % G e t M a g i c L i s t % |
| 402 | % % |
| 403 | % % |
| 404 | % % |
| 405 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 406 | % |
| 407 | % GetMagicList() returns any image format aliases that match the specified |
| 408 | % pattern. |
| 409 | % |
| 410 | % The format of the GetMagicList function is: |
| 411 | % |
| 412 | % char **GetMagicList(const char *pattern,unsigned long *number_aliases, |
| 413 | % ExceptionInfo *exception) |
| 414 | % |
| 415 | % A description of each parameter follows: |
| 416 | % |
| 417 | % o pattern: Specifies a pointer to a text string containing a pattern. |
| 418 | % |
| 419 | % o number_aliases: This integer returns the number of image format aliases |
| 420 | % in the list. |
| 421 | % |
| 422 | % o exception: return any errors or warnings in this structure. |
| 423 | % |
| 424 | */ |
| 425 | |
| 426 | #if defined(__cplusplus) || defined(c_plusplus) |
| 427 | extern "C" { |
| 428 | #endif |
| 429 | |
| 430 | static int MagicCompare(const void *x,const void *y) |
| 431 | { |
| 432 | register const char |
| 433 | *p, |
| 434 | *q; |
| 435 | |
| 436 | p=(const char *) x; |
| 437 | q=(const char *) y; |
| 438 | return(LocaleCompare(p,q)); |
| 439 | } |
| 440 | |
| 441 | #if defined(__cplusplus) || defined(c_plusplus) |
| 442 | } |
| 443 | #endif |
| 444 | |
| 445 | MagickExport char **GetMagicList(const char *pattern, |
| 446 | unsigned long *number_aliases,ExceptionInfo *exception) |
| 447 | { |
| 448 | char |
| 449 | **aliases; |
| 450 | |
| 451 | register const MagicInfo |
| 452 | *p; |
| 453 | |
| 454 | register long |
| 455 | i; |
| 456 | |
| 457 | /* |
| 458 | Allocate configure list. |
| 459 | */ |
| 460 | assert(pattern != (char *) NULL); |
| 461 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"%s",pattern); |
| 462 | assert(number_aliases != (unsigned long *) NULL); |
| 463 | *number_aliases=0; |
| 464 | p=GetMagicInfo((const unsigned char *) "*",0,exception); |
| 465 | if (p == (const MagicInfo *) NULL) |
| 466 | return((char **) NULL); |
| 467 | aliases=(char **) AcquireQuantumMemory((size_t) |
| 468 | GetNumberOfElementsInLinkedList(magic_list)+1UL,sizeof(*aliases)); |
| 469 | if (aliases == (char **) NULL) |
| 470 | return((char **) NULL); |
| 471 | AcquireSemaphoreInfo(&magic_semaphore); |
| 472 | ResetLinkedListIterator(magic_list); |
| 473 | p=(const MagicInfo *) GetNextValueInLinkedList(magic_list); |
| 474 | for (i=0; p != (const MagicInfo *) NULL; ) |
| 475 | { |
| 476 | if ((p->stealth == MagickFalse) && |
| 477 | (GlobExpression(p->name,pattern,MagickFalse) != MagickFalse)) |
| 478 | aliases[i++]=ConstantString(p->name); |
| 479 | p=(const MagicInfo *) GetNextValueInLinkedList(magic_list); |
| 480 | } |
| 481 | RelinquishSemaphoreInfo(magic_semaphore); |
| 482 | qsort((void *) aliases,(size_t) i,sizeof(*aliases),MagicCompare); |
| 483 | aliases[i]=(char *) NULL; |
| 484 | *number_aliases=(unsigned long) i; |
| 485 | return(aliases); |
| 486 | } |
| 487 | |
| 488 | /* |
| 489 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 490 | % % |
| 491 | % % |
| 492 | % % |
| 493 | % G e t M a g i c N a m e % |
| 494 | % % |
| 495 | % % |
| 496 | % % |
| 497 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 498 | % |
| 499 | % GetMagicName() returns the name associated with the magic. |
| 500 | % |
| 501 | % The format of the GetMagicName method is: |
| 502 | % |
| 503 | % const char *GetMagicName(const MagicInfo *magic_info) |
| 504 | % |
| 505 | % A description of each parameter follows: |
| 506 | % |
| 507 | % o magic_info: The magic info. |
| 508 | % |
| 509 | */ |
| 510 | MagickExport const char *GetMagicName(const MagicInfo *magic_info) |
| 511 | { |
| 512 | (void) LogMagickEvent(TraceEvent,GetMagickModule(),"..."); |
| 513 | assert(magic_info != (MagicInfo *) NULL); |
| 514 | assert(magic_info->signature == MagickSignature); |
| 515 | return(magic_info->name); |
| 516 | } |
| 517 | |
| 518 | /* |
| 519 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 520 | % % |
| 521 | % % |
| 522 | % % |
| 523 | + I n i t i a l i z e M a g i c L i s t % |
| 524 | % % |
| 525 | % % |
| 526 | % % |
| 527 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 528 | % |
| 529 | % InitializeMagicList() initializes the magic list. |
| 530 | % |
| 531 | % The format of the InitializeMagicList method is: |
| 532 | % |
| 533 | % MagickBooleanType InitializeMagicList(ExceptionInfo *exception) |
| 534 | % |
| 535 | % A description of each parameter follows. |
| 536 | % |
| 537 | % o exception: return any errors or warnings in this structure. |
| 538 | % |
| 539 | */ |
| 540 | static MagickBooleanType InitializeMagicList(ExceptionInfo *exception) |
| 541 | { |
| 542 | if ((magic_list == (LinkedListInfo *) NULL) && |
| 543 | (instantiate_magic == MagickFalse)) |
| 544 | { |
| 545 | AcquireSemaphoreInfo(&magic_semaphore); |
| 546 | if ((magic_list == (LinkedListInfo *) NULL) && |
| 547 | (instantiate_magic == MagickFalse)) |
| 548 | { |
| 549 | (void) LoadMagicLists(MagicFilename,exception); |
| 550 | instantiate_magic=MagickTrue; |
| 551 | } |
| 552 | RelinquishSemaphoreInfo(magic_semaphore); |
| 553 | } |
| 554 | return(magic_list != (LinkedListInfo *) NULL ? MagickTrue : MagickFalse); |
| 555 | } |
| 556 | |
| 557 | /* |
| 558 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 559 | % % |
| 560 | % % |
| 561 | % % |
| 562 | % L i s t M a g i c I n f o % |
| 563 | % % |
| 564 | % % |
| 565 | % % |
| 566 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 567 | % |
| 568 | % ListMagicInfo() lists the magic info to a file. |
| 569 | % |
| 570 | % The format of the ListMagicInfo method is: |
| 571 | % |
| 572 | % MagickBooleanType ListMagicInfo(FILE *file,ExceptionInfo *exception) |
| 573 | % |
| 574 | % A description of each parameter follows. |
| 575 | % |
| 576 | % o file: An pointer to a FILE. |
| 577 | % |
| 578 | % o exception: return any errors or warnings in this structure. |
| 579 | % |
| 580 | */ |
| 581 | MagickExport MagickBooleanType ListMagicInfo(FILE *file, |
| 582 | ExceptionInfo *exception) |
| 583 | { |
| 584 | const char |
| 585 | *path; |
| 586 | |
| 587 | const MagicInfo |
| 588 | **magic_info; |
| 589 | |
| 590 | long |
| 591 | j; |
| 592 | |
| 593 | register long |
| 594 | i; |
| 595 | |
| 596 | unsigned long |
| 597 | number_aliases; |
| 598 | |
| 599 | if (file == (const FILE *) NULL) |
| 600 | file=stdout; |
| 601 | magic_info=GetMagicInfoList("*",&number_aliases,exception); |
| 602 | if (magic_info == (const MagicInfo **) NULL) |
| 603 | return(MagickFalse); |
| 604 | j=0; |
| 605 | path=(const char *) NULL; |
| 606 | for (i=0; i < (long) number_aliases; i++) |
| 607 | { |
| 608 | if (magic_info[i]->stealth != MagickFalse) |
| 609 | continue; |
| 610 | if ((path == (const char *) NULL) || |
| 611 | (LocaleCompare(path,magic_info[i]->path) != 0)) |
| 612 | { |
| 613 | if (magic_info[i]->path != (char *) NULL) |
| 614 | (void) fprintf(file,"\nPath: %s\n\n",magic_info[i]->path); |
| 615 | (void) fprintf(file,"Name Offset Target\n"); |
| 616 | (void) fprintf(file,"-------------------------------------------------" |
| 617 | "------------------------------\n"); |
| 618 | } |
| 619 | path=magic_info[i]->path; |
| 620 | (void) fprintf(file,"%s",magic_info[i]->name); |
| 621 | for (j=(long) strlen(magic_info[i]->name); j <= 9; j++) |
| 622 | (void) fprintf(file," "); |
| 623 | (void) fprintf(file,"%6ld ",(long) magic_info[i]->offset); |
| 624 | if (magic_info[i]->target != (char *) NULL) |
| 625 | (void) fprintf(file,"%s",magic_info[i]->target); |
| 626 | (void) fprintf(file,"\n"); |
| 627 | } |
| 628 | (void) fflush(file); |
| 629 | magic_info=(const MagicInfo **) RelinquishMagickMemory((void *) magic_info); |
| 630 | return(MagickTrue); |
| 631 | } |
| 632 | |
| 633 | /* |
| 634 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 635 | % % |
| 636 | % % |
| 637 | % % |
| 638 | + L o a d M a g i c L i s t % |
| 639 | % % |
| 640 | % % |
| 641 | % % |
| 642 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 643 | % |
| 644 | % LoadMagicList() loads the magic configuration file which provides a mapping |
| 645 | % between magic attributes and a magic name. |
| 646 | % |
| 647 | % The format of the LoadMagicList method is: |
| 648 | % |
| 649 | % MagickBooleanType LoadMagicList(const char *xml,const char *filename, |
| 650 | % const unsigned long depth,ExceptionInfo *exception) |
| 651 | % |
| 652 | % A description of each parameter follows: |
| 653 | % |
| 654 | % o xml: The magic list in XML format. |
| 655 | % |
| 656 | % o filename: The magic list filename. |
| 657 | % |
| 658 | % o depth: depth of <include /> statements. |
| 659 | % |
| 660 | % o exception: return any errors or warnings in this structure. |
| 661 | % |
| 662 | */ |
| 663 | static MagickBooleanType LoadMagicList(const char *xml,const char *filename, |
| 664 | const unsigned long depth,ExceptionInfo *exception) |
| 665 | { |
| 666 | char |
| 667 | keyword[MaxTextExtent], |
| 668 | *token; |
| 669 | |
| 670 | const char |
| 671 | *q; |
| 672 | |
| 673 | MagickBooleanType |
| 674 | status; |
| 675 | |
| 676 | MagicInfo |
| 677 | *magic_info; |
| 678 | |
| 679 | /* |
| 680 | Load the magic map file. |
| 681 | */ |
| 682 | (void) LogMagickEvent(ConfigureEvent,GetMagickModule(), |
| 683 | "Loading magic configure file \"%s\" ...",filename); |
| 684 | if (xml == (char *) NULL) |
| 685 | return(MagickFalse); |
| 686 | if (magic_list == (LinkedListInfo *) NULL) |
| 687 | magic_list=NewLinkedList(0); |
| 688 | status=MagickTrue; |
| 689 | magic_info=(MagicInfo *) NULL; |
| 690 | token=AcquireString(xml); |
| 691 | for (q=(char *) xml; *q != '\0'; ) |
| 692 | { |
| 693 | /* |
| 694 | Interpret XML. |
| 695 | */ |
| 696 | GetMagickToken(q,&q,token); |
| 697 | if (*token == '\0') |
| 698 | break; |
| 699 | (void) CopyMagickString(keyword,token,MaxTextExtent); |
| 700 | if (LocaleNCompare(keyword,"<!DOCTYPE",9) == 0) |
| 701 | { |
| 702 | /* |
| 703 | Doctype element. |
| 704 | */ |
| 705 | while ((LocaleNCompare(q,"]>",2) != 0) && (*q != '\0')) |
| 706 | GetMagickToken(q,&q,token); |
| 707 | continue; |
| 708 | } |
| 709 | if (LocaleNCompare(keyword,"<!--",4) == 0) |
| 710 | { |
| 711 | /* |
| 712 | Comment element. |
| 713 | */ |
| 714 | while ((LocaleNCompare(q,"->",2) != 0) && (*q != '\0')) |
| 715 | GetMagickToken(q,&q,token); |
| 716 | continue; |
| 717 | } |
| 718 | if (LocaleCompare(keyword,"<include") == 0) |
| 719 | { |
| 720 | /* |
| 721 | Include element. |
| 722 | */ |
| 723 | while (((*token != '/') && (*(token+1) != '>')) && (*q != '\0')) |
| 724 | { |
| 725 | (void) CopyMagickString(keyword,token,MaxTextExtent); |
| 726 | GetMagickToken(q,&q,token); |
| 727 | if (*token != '=') |
| 728 | continue; |
| 729 | GetMagickToken(q,&q,token); |
| 730 | if (LocaleCompare(keyword,"file") == 0) |
| 731 | { |
| 732 | if (depth > 200) |
| 733 | (void) ThrowMagickException(exception,GetMagickModule(), |
| 734 | ConfigureError,"IncludeElementNestedTooDeeply","`%s'",token); |
| 735 | else |
| 736 | { |
| 737 | char |
| 738 | path[MaxTextExtent], |
| 739 | *xml; |
| 740 | |
| 741 | GetPathComponent(filename,HeadPath,path); |
| 742 | if (*path != '\0') |
| 743 | (void) ConcatenateMagickString(path,DirectorySeparator, |
| 744 | MaxTextExtent); |
| 745 | if (*token == *DirectorySeparator) |
| 746 | (void) CopyMagickString(path,token,MaxTextExtent); |
| 747 | else |
| 748 | (void) ConcatenateMagickString(path,token,MaxTextExtent); |
| 749 | xml=FileToString(path,~0,exception); |
| 750 | if (xml != (char *) NULL) |
| 751 | { |
| 752 | status=LoadMagicList(xml,path,depth+1,exception); |
| 753 | xml=(char *) RelinquishMagickMemory(xml); |
| 754 | } |
| 755 | } |
| 756 | } |
| 757 | } |
| 758 | continue; |
| 759 | } |
| 760 | if (LocaleCompare(keyword,"<magic") == 0) |
| 761 | { |
| 762 | /* |
| 763 | Magic element. |
| 764 | */ |
| 765 | magic_info=(MagicInfo *) AcquireMagickMemory(sizeof(*magic_info)); |
| 766 | if (magic_info == (MagicInfo *) NULL) |
| 767 | ThrowFatalException(ResourceLimitFatalError,"MemoryAllocationFailed"); |
| 768 | (void) ResetMagickMemory(magic_info,0,sizeof(*magic_info)); |
| 769 | magic_info->path=ConstantString(filename); |
| 770 | magic_info->signature=MagickSignature; |
| 771 | continue; |
| 772 | } |
| 773 | if (magic_info == (MagicInfo *) NULL) |
| 774 | continue; |
| 775 | if (LocaleCompare(keyword,"/>") == 0) |
| 776 | { |
| 777 | status=AppendValueToLinkedList(magic_list,magic_info); |
| 778 | if (status == MagickFalse) |
| 779 | (void) ThrowMagickException(exception,GetMagickModule(), |
| 780 | ResourceLimitError,"MemoryAllocationFailed","`%s'", |
| 781 | magic_info->name); |
| 782 | magic_info=(MagicInfo *) NULL; |
| 783 | } |
| 784 | GetMagickToken(q,(const char **) NULL,token); |
| 785 | if (*token != '=') |
| 786 | continue; |
| 787 | GetMagickToken(q,&q,token); |
| 788 | GetMagickToken(q,&q,token); |
| 789 | switch (*keyword) |
| 790 | { |
| 791 | case 'N': |
| 792 | case 'n': |
| 793 | { |
| 794 | if (LocaleCompare((char *) keyword,"name") == 0) |
| 795 | { |
| 796 | magic_info->name=ConstantString(token); |
| 797 | break; |
| 798 | } |
| 799 | break; |
| 800 | } |
| 801 | case 'O': |
| 802 | case 'o': |
| 803 | { |
| 804 | if (LocaleCompare((char *) keyword,"offset") == 0) |
| 805 | { |
| 806 | magic_info->offset=(MagickOffsetType) atol(token); |
| 807 | break; |
| 808 | } |
| 809 | break; |
| 810 | } |
| 811 | case 'S': |
| 812 | case 's': |
| 813 | { |
| 814 | if (LocaleCompare((char *) keyword,"stealth") == 0) |
| 815 | { |
| 816 | magic_info->stealth=IsMagickTrue(token); |
| 817 | break; |
| 818 | } |
| 819 | break; |
| 820 | } |
| 821 | case 'T': |
| 822 | case 't': |
| 823 | { |
| 824 | if (LocaleCompare((char *) keyword,"target") == 0) |
| 825 | { |
| 826 | char |
| 827 | *p; |
| 828 | |
| 829 | register unsigned char |
| 830 | *q; |
| 831 | |
| 832 | size_t |
| 833 | length; |
| 834 | |
| 835 | length=strlen(token); |
| 836 | magic_info->target=ConstantString(token); |
| 837 | magic_info->magic=(unsigned char *) ConstantString(token); |
| 838 | q=magic_info->magic; |
| 839 | for (p=magic_info->target; *p != '\0'; ) |
| 840 | { |
| 841 | if (*p == '\\') |
| 842 | { |
| 843 | p++; |
| 844 | if (isdigit((int) ((unsigned char) *p)) != 0) |
| 845 | { |
| 846 | char |
| 847 | *end; |
| 848 | |
| 849 | *q++=(unsigned char) strtol(p,&end,8); |
| 850 | p+=(end-p); |
| 851 | magic_info->length++; |
| 852 | continue; |
| 853 | } |
| 854 | switch (*p) |
| 855 | { |
| 856 | case 'b': *q='\b'; break; |
| 857 | case 'f': *q='\f'; break; |
| 858 | case 'n': *q='\n'; break; |
| 859 | case 'r': *q='\r'; break; |
| 860 | case 't': *q='\t'; break; |
| 861 | case 'v': *q='\v'; break; |
| 862 | case 'a': *q='a'; break; |
| 863 | case '?': *q='\?'; break; |
| 864 | default: *q=(unsigned char) (*p); break; |
| 865 | } |
| 866 | p++; |
| 867 | q++; |
| 868 | magic_info->length++; |
| 869 | continue; |
| 870 | } |
| 871 | else |
| 872 | if (LocaleNCompare(p,"&",5) == 0) |
| 873 | (void) CopyMagickString(p+1,p+5,length-magic_info->length); |
| 874 | *q++=(unsigned char) (*p++); |
| 875 | magic_info->length++; |
| 876 | } |
| 877 | break; |
| 878 | } |
| 879 | break; |
| 880 | } |
| 881 | default: |
| 882 | break; |
| 883 | } |
| 884 | } |
| 885 | token=(char *) RelinquishMagickMemory(token); |
| 886 | return(status); |
| 887 | } |
| 888 | |
| 889 | /* |
| 890 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 891 | % % |
| 892 | % % |
| 893 | % % |
| 894 | % L o a d M a g i c L i s t s % |
| 895 | % % |
| 896 | % % |
| 897 | % % |
| 898 | %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% |
| 899 | % |
| 900 | % LoadMagicLists() loads one or more magic configuration file which provides a |
| 901 | % mapping between magic attributes and a magic name. |
| 902 | % |
| 903 | % The format of the LoadMagicLists method is: |
| 904 | % |
| 905 | % MagickBooleanType LoadMagicLists(const char *filename, |
| 906 | % ExceptionInfo *exception) |
| 907 | % |
| 908 | % A description of each parameter follows: |
| 909 | % |
| 910 | % o filename: the font file name. |
| 911 | % |
| 912 | % o exception: return any errors or warnings in this structure. |
| 913 | % |
| 914 | */ |
| 915 | static MagickBooleanType LoadMagicLists(const char *filename, |
| 916 | ExceptionInfo *exception) |
| 917 | { |
| 918 | #if defined(MAGICKCORE_EMBEDDABLE_SUPPORT) |
| 919 | return(LoadMagicList(MagicMap,"built-in",0,exception)); |
| 920 | #else |
| 921 | char |
| 922 | path[MaxTextExtent]; |
| 923 | |
| 924 | const StringInfo |
| 925 | *option; |
| 926 | |
| 927 | LinkedListInfo |
| 928 | *options; |
| 929 | |
| 930 | MagickStatusType |
| 931 | status; |
| 932 | |
| 933 | status=MagickFalse; |
| 934 | *path='\0'; |
| 935 | options=GetConfigureOptions(filename,exception); |
| 936 | option=(const StringInfo *) GetNextValueInLinkedList(options); |
| 937 | while (option != (const StringInfo *) NULL) |
| 938 | { |
| 939 | (void) CopyMagickString(path,GetStringInfoPath(option),MaxTextExtent); |
| 940 | status|=LoadMagicList((const char *) GetStringInfoDatum(option), |
| 941 | GetStringInfoPath(option),0,exception); |
| 942 | option=(const StringInfo *) GetNextValueInLinkedList(options); |
| 943 | } |
| 944 | options=DestroyConfigureOptions(options); |
| 945 | if ((magic_list == (LinkedListInfo *) NULL) || |
| 946 | (IsLinkedListEmpty(magic_list) != MagickFalse)) |
| 947 | { |
| 948 | (void) ThrowMagickException(exception,GetMagickModule(),ConfigureWarning, |
| 949 | "UnableToOpenConfigureFile","`%s'",path); |
| 950 | status|=LoadMagicList(MagicMap,"built-in",0,exception); |
| 951 | } |
| 952 | return(status != 0 ? MagickTrue : MagickFalse); |
| 953 | #endif |
| 954 | } |